69505109 has 2 divisors, whose sum is σ = 69505110. Its totient is φ = 69505108.

The previous prime is 69505099. The next prime is 69505147. The reversal of 69505109 is 90150596.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43850884 + 25654225 = 6622^2 + 5065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69505109 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34752554 + 34752555.

It is an arithmetic number, because the mean of its divisors is an integer number (34752555).

Almost surely, 2^69505109 is an apocalyptic number.

It is an amenable number.

69505109 is a deficient number, since it is larger than the sum of its proper divisors (1).

69505109 is an equidigital number, since it uses as much as digits as its factorization.

69505109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 69505109 is about 8336.9724120930. The cubic root of 69505109 is about 411.1550002138.

The spelling of 69505109 in words is "sixty-nine million, five hundred five thousand, one hundred nine".